SU1401203A1 - Planetary precession gear - Google Patents

Abstract

The invention relates to mechanical engineering. The purpose of the invention is to increase the gear ratio due to the addition of two gears: a central wheel with internal teeth mounted for rotation on the output shaft, and an intermediate wheel with two rims — one with bobbins, the other with external teeth. When rotating the input shaft 4 transmits the precession wheel 8 movement without rotation. The intermediate wheel performs a complex movement, including precessional and rotational movements around its own geometric axis. Further, the rotational movement of the intermediate wheel through its crown 15 is transmitted to the central wheel 14, and through the tskews 17 to the central conical wheel 12. 1 sludge. (L S utt / t /////, - U /////// 7 T1 L I N

Description

The invention relates to parts and is intended for use in precession gears with a large ratio, for example, in the manufacture of gearboxes.

The purpose of the invention is to increase the gear ratio by supplementing the transmission with two wheels: intermediate and central with internal teeth.

The drawing shows schematically the proposed planetary precession transmission,

The planetary precession transmission includes a housing 1, in which the input and output shafts 4 and 5 are located on bearing supports 2 and 3, respectively.

An oblique curvature 6 is made on the input shaft 4 at an angle to its axis, on which a precession gear wheel 8 is mounted in the bearing supports 7. The wheel hub 8 is made elongated and has a gear 9 on the outer surface with barrel-shaped teeth of a gear coupling, gear teeth 9 an internal gear rim 10 of the same gear coupling is engaged in a sleeve 11 attached to the housing 1 in the wheel 8 which surrounds the hub.

The output shaft 5 is rigidly connected to the central bevel gear 12. In addition, on the output shaft 5 in the bearing supports 13 a central wheel 14 with internal teeth is mounted.

Between the precession gear wheel 8 and the central bevel gear 12 there is an intermediate wheel with two rims with lanterns / teeth, the number of hoses of which is more or less by one than the number of teeth of wheel 8, and the rim 15 with outer teeth.

The crown with pinnose teeth has n ax x 16 zipper 17 and restrictive washers 18. The crown 15 with barrel-shaped teeth is engaged with the central wheel 14.

Q

15

20

25 ZO

.

35

45

2032

The angle of inclination of the oblique crank 6 is chosen so that the amplitude of the precessional motion of the wheel 8 caused by it ensures that the teeth of the wheel 8 enter and exit from the gears 8 with the bobbins 17, and on the other, the crane 17 with the teeth of the wheel 12.

The transmission works as follows.

The input shaft 3 rotates, informs the wheel 8 of the precessional movement without turning. At the same time, the intermediate wheel makes a complex movement, including the precessional movement and the rotational double action around its own geometric axis

Further, the rotational movement of the intermediate wheel through its crown 15 and the central wheel 14 is transmitted to the output shaft 19.

However, the intermediate wheel, making precessional movement, transmits rotation through the central bevel wheel 12 to the output shaft 15 "

Claims (1)

Invention Formula A planetary precession gear containing an input with an oblique crank and output shafts, a central bevel wheel rigidly connected to the latter, a precession wheel mounted on an oblique crank and a precession wheel angular locking mechanism, designed in the form of a gear coupling connecting the latter with the body, this that, in order to increase the gear ratio, it is provided with a two-rim intermediate wheel placed between the central bevel wheel and the precession wheel, one The teeth are intended to interact with the latter, the other with the outer teeth and. a rotatable central shaft with internal teeth on the output shaft for engagement with external teeth.